MPEC 1997-W04: 1997 US9
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M.P.E.C. 1997-W04 Issued 1997 Nov. 22, 17:29 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets and routine data on comets. They are published
on behalf of Commission 20 of the International Astronomical Union by the
Minor Planet Center, Smithsonian Astrophysical Observatory,
Cambridge, MA 02138, U.S.A.
BMARSDEN@CFA.HARVARD.EDU or GWILLIAMS@CFA.HARVARD.EDU
URL http://cfa-www.harvard.edu/iau/mpc.html
1997 US9
Revision to MPEC 1997-V18
Observations:
J97U09S C1997 11 09.30009 01 22 39.31 -00 43 45.7 16.6 R 696
J97U09S C1997 11 09.30110 01 22 39.21 -00 43 48.5 16.5 R 696
J97U09S C1997 11 09.30200 01 22 39.11 -00 43 51.0 16.5 R 696
J97U09S C1997 11 18.91384 01 10 39.56 -06 53 25.1 587
J97U09S C1997 11 18.91731 01 10 39.35 -06 53 31.3 587
J97U09S C1997 11 21.87538 01 08 20.55 -08 20 55.8 17.6 V 046
J97U09S C1997 11 21.87605 01 08 20.52 -08 20 57.1 046
J97U09S C1997 11 21.87684 01 08 20.48 -08 20 59.0 046
Observer details:
046 Klet. Observers J. Ticha, M. Tichy. Measurer M. Tichy.
0.57-m f/5.2 reflector + CCD.
587 Sormano. Observers P. Sicoli, F. Manca. 0.5-m reflector + CCD.
696 Whipple Observatory, Mt. Hopkins. Observer C. W. Hergenrother.
1.2-m reflector + CCD.
Orbital elements:
1997 US9
Epoch 1997 Nov. 8.0 TT = JDT 2450760.5 Marsden
M 196.17220 (2000.0) P Q
n 0.91295732 Peri. 357.17600 -0.86884728 +0.46007096
a 1.0523715 Node 212.31463 -0.44726000 -0.88779395
e 0.2817204 Incl. 20.00349 -0.21228024 -0.01251492
P 1.08 H 17.5 G 0.15
From 114 observations 1997 Oct. 30-Nov. 21.
Ephemeris:
1997 US9 a,e,i = 1.05, 0.28, 20 q = 0.7559
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1997 11 18 01 11.51 -06 23.7 0.426 1.331 136.7 30.6 17.6
1997 11 23 01 07.63 -08 50.8 0.454 1.324 129.7 35.0 17.8
1997 11 28 01 05.50 -10 46.2 0.484 1.316 123.4 38.8 18.1
1997 12 03 01 04.98 -12 13.9 0.515 1.307 117.7 41.9 18.3
1997 12 08 01 05.92 -13 18.2 0.547 1.297 112.5 44.6 18.5
1997 12 13 01 08.14 -14 03.1 0.578 1.286 107.9 46.8 18.6
1997 12 18 01 11.47 -14 31.9 0.609 1.273 103.6 48.7 18.8
1997 12 23 01 15.77 -14 47.3 0.639 1.259 99.6 50.4 18.9
1997 12 28 01 20.95 -14 51.6 0.668 1.245 96.0 51.8 19.0
1998 01 02 01 26.90 -14 46.7 0.695 1.229 92.6 53.1 19.1
1998 01 07 01 33.54 -14 34.0 0.719 1.212 89.4 54.2 19.2
1998 01 12 01 40.79 -14 15.1 0.742 1.195 86.5 55.3 19.2
1998 01 17 01 48.59 -13 50.7 0.761 1.176 83.7 56.3 19.3
1998 01 22 01 56.87 -13 21.8 0.778 1.156 81.1 57.2 19.3
1998 01 27 02 05.62 -12 49.0 0.792 1.136 78.6 58.2 19.4
1998 02 01 02 14.81 -12 12.8 0.802 1.114 76.3 59.3 19.4
1998 02 06 02 24.40 -11 33.6 0.809 1.092 74.2 60.3 19.4
1998 02 11 02 34.35 -10 52.0 0.812 1.069 72.2 61.5 19.4
1998 02 16 02 44.65 -10 07.9 0.812 1.046 70.3 62.8 19.4
1998 02 21 02 55.27 -09 21.6 0.808 1.022 68.4 64.2 19.4
1998 02 26 03 06.20 -08 32.8 0.799 0.997 66.7 65.8 19.3
1998 03 03 03 17.41 -07 41.4 0.787 0.973 65.1 67.6 19.3
1998 03 08 03 28.88 -06 47.2 0.771 0.948 63.6 69.7 19.3
1998 03 13 03 40.55 -05 49.4 0.750 0.924 62.1 72.0 19.2
1998 03 18 03 52.37 -04 47.2 0.726 0.900 60.7 74.6 19.2
1998 03 23 04 04.29 -03 39.2 0.698 0.876 59.2 77.7 19.1
1998 03 28 04 16.22 -02 23.4 0.666 0.854 57.7 81.1 19.1
1998 04 02 04 28.06 -00 57.3 0.630 0.833 56.1 85.0 19.1
1998 04 07 04 39.64 +00 42.4 0.592 0.814 54.4 89.3 19.1
1998 04 12 04 50.76 +02 40.6 0.551 0.797 52.5 94.3 19.1
1998 04 17 05 01.16 +05 03.6 0.509 0.782 50.2 99.8 19.1
1998 04 22 05 10.50 +07 59.7 0.466 0.771 47.5 106.1 19.2
1998 04 27 05 18.36 +11 38.7 0.424 0.762 44.2 112.9 19.4
1998 05 02 05 24.14 +16 11.8 0.384 0.757 40.4 120.4 19.7
1998 05 07 05 27.06 +21 49.2 0.348 0.756 36.1 128.1 20.1
Brian G. Marsden (C) Copyright 1997 MPC M.P.E.C. 1997-W04
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